2021423354 has 4 divisors (see below), whose sum is σ = 3032135034. Its totient is φ = 1010711676.

The previous prime is 2021423317. The next prime is 2021423359. The reversal of 2021423354 is 4533241202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1296360025 + 725063329 = 36005^2 + 26927^2 .

It is not an unprimeable number, because it can be changed into a prime (2021423359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505355837 + ... + 505355840.

Almost surely, 2^2021423354 is an apocalyptic number.

2021423354 is a deficient number, since it is larger than the sum of its proper divisors (1010711680).

2021423354 is a wasteful number, since it uses less digits than its factorization.

2021423354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010711679.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 2021423354 is about 44960.2419255057. The cubic root of 2021423354 is about 1264.4037046521.

Adding to 2021423354 its reverse (4533241202), we get a palindrome (6554664556).

The spelling of 2021423354 in words is "two billion, twenty-one million, four hundred twenty-three thousand, three hundred fifty-four".